Arianna Huffington is the chair, president, and editor-in-chief of the Huffington Post Media Group, and author of fourteen books.

In May 2005, she launched The Huffington Post, a news and blog site that quickly became one of the most widely-read, linked to, and frequently-cited media brands on the Internet. In 2012, the site won a Pulitzer Prize for national reporting.

She has been named to Time Magazine's list of the world’s 100 most influential people and the Forbes Most Powerful Women list. Originally from Greece, she moved to England when she was 16 and graduated from Cambridge University with an M.A. in economics. At 21, she became president of the famed debating society, the Cambridge Union.

She serves on several boards, including The Center for Public Integrity; The Committee to Protect Journalists; HuffPost's partner in Spain, the newspaper EL PAÍS; Payoff; and ONEX.

Her 14th book, Thrive: The Third Metric to Redefining Success and Creating a Life of Well-Being, Wisdom, and Wonder debuted at #1 on the New York Times Bestseller list and was released in paperback in March 2015. Her new book, Sleep Power, on the science, history and mystery of sleep, will be published in April 2016.

Entries by Arianna Huffington

This week we saw a demonstration of the deep connection between imagery and outrage. On Tuesday, the hunter that killed the beloved and often photographed lion, Cecil, in Zimbabwe was identified as Minnesota dentist Dr. Walter Palmer. As the outrage went viral, the hunter became the hunted. His clinic's website...

This week brought multiple challenges to move from outrage to action. On Tuesday, the dash cam video of the violent arrest of Sandra Bland was released; authorities later said autopsy results suggested she had committed suicide while in jail. But many questions remain, including why, already this year,...

This week, the historic nuclear deal between Iran and six world powers was finalized. Provisions include reducing Iran's stockpile of uranium by 98 percent, IAEA inspections for 25 years, and a "snap-back" clause that would quickly reimpose sanctions if Iran breaks the deal. President Obama said...

Fotini Markopoulou is a theoretical physicist and hardware tech designer. She is co-founder of Team Turquoise, a wearable tech company that uses research in psycho-physiology to create technology that changes how we perceive, feel and behave. In answer to my questions, she shared her insights on new developments in wearable...

This week the world watched as Greece continued its fight for economic survival. Armed with the Greek people's resounding "no" vote on yet another round of economy-killing austerity measures, Prime Minister Tsipras went back to the negotiating table with EU negotiators. But the rescue package he

Mathias Basner is an assistant professor of sleep and chronobiology in psychiatry at the University of Pennsylvania's Perelman School of Medicine, and the deputy editor of the journal SLEEP. In answer to my questions, he shared his insights on the effects of sleep deprivation, the relationship between work...

A funny thing happened when Susan Cain published her best-selling book, Quiet: The Power of Introverts in a World That Can't Stop Talking, in 2012: it got introverts talking. Here's how she describes the reaction:

Kelly Bulkeley is a dream researcher and visiting scholar at the Graduate Theological Union in Berkeley, California. His lifelong fascination with dreams began in his teenage years, when he experienced a string of nightmares that got him thinking about where dreams come from and what they mean. In...